Microrelief of fatigue fractures of aluminum alloy samples during high frequency loading

1981 ◽  
Vol 16 (5) ◽  
pp. 423-425 ◽  
Author(s):  
L. R. Botvina ◽  
V. N. Shabalina ◽  
I. P. Zhegina ◽  
Yu. M. Stoida
2013 ◽  
Vol 203-204 ◽  
pp. 258-261 ◽  
Author(s):  
Izabela Kalemba ◽  
Krzysztof Muszka ◽  
Mirosław Wróbel ◽  
Stanislaw Dymek ◽  
Carter Hamilton

This research addresses the EBSD analysis of friction stir welded 7136-T76 aluminum alloy. The objectives of this study were to evaluate the grain size and their shape, character of grain boundaries in the stirred and thermo-mechanically affected zones, both on the advancing and retreating side as well as to investigate changes in the crystallographic texture. Results of texture analysis indicate the complexity of the FSW process. The texture gradually weakens on moving from the thermo-mechanically affected zone toward the weld center. The stirred zone is characterized by very weak texture and is dominated by high angle boundaries. On the other hand, the thermo-mechanically affected zone exhibits a high frequency of low angle boundaries.


2010 ◽  
Vol 60 (11) ◽  
pp. 602-607 ◽  
Author(s):  
Tomoharu Yamamoto ◽  
Hiroomi Tanaka ◽  
Masahiro Fujita ◽  
Hidetaka Asoh ◽  
Sachiko Ono

2013 ◽  
Vol 577-578 ◽  
pp. 273-276 ◽  
Author(s):  
Volodymyr Hutsaylyuk ◽  
Mykola Czausow ◽  
Valentin Berezin ◽  
Andriy Pylypenko ◽  
Katerina Volyanska

By applying original experimental methodology and software system for non-contact research of deformation field investigated conditions of DNP in the test setup of given stiffness. Established that at the speed of additional impulse loading within 300-500 MN / s, specimens of aluminum alloy 2024 - T3 and D16 exposed low cycle, high-frequency oscillations with a frequency of 1.5 ... 2 KHz. This process of load with deformations speeds of the material 2 ... 60s-1 promotes plasticizing of aluminum alloys and delays in "neck forming.".


1976 ◽  
Vol 11 (2) ◽  
pp. 224-225
Author(s):  
N. L. Pozen ◽  
B. A. Gryaznov ◽  
B. A. Lyashenko

2020 ◽  
Vol 73 (7) ◽  
pp. 1951-1960
Author(s):  
Huijing Zhang ◽  
Xiaohui Zhao ◽  
Desheng Xu ◽  
Yu Liu ◽  
Xiaoming Qiu

2016 ◽  
Vol 2016.22 (0) ◽  
pp. _GS0401-1_-_GS0401-2_
Author(s):  
Shuko GOTO ◽  
Tenchi ANAYAMA ◽  
Tomoji OSADA ◽  
Keiji SONOYA ◽  
Takeyuki ABE ◽  
...  

2011 ◽  
Vol 130-134 ◽  
pp. 27-31 ◽  
Author(s):  
Si Bo Yan ◽  
Yong Lun Song ◽  
Jun Zhang ◽  
Li Lai Bai

The plate butt welding tests have been carried out to the 2219 high-strength aluminum alloy material by utilizing the self-development compound high frequency pulse TIG power source, whose results show that the mechanical properties of the welding seam may be effectively enhanced by adding the high frequency pulse energy. Therefore, a acoustic emission sensing system was established to acquire the transmission effect of the high frequency pulse arc energy during the welding process; moreover, the influence on the welding seam microstructures by the compound high frequency pulse energy has been studied. The results show the following effects: the porosity number at the both sides of the welding seam fusion line may be decreased significantly by adding the high frequency pulse energy; The analysis to the high frequency pulse action mechanism has been carried out according to the above conclusions to provide the technology theory base for improving and enhancing the aluminum alloy welding joint performances.


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